1,721,017 research outputs found
Future Perspectives
No full textIn 2013, kiwifruit joined the list of sequenced plant genomes. Its sequence is now a valuable tool for scientists working in different fields, from taxonomy to plant breeding and physiology. As kiwifruit is dioecious and therefore highly heterozygous, scientists encountered severe difficulties in correctly assembling the contigs and, as time goes by, the scaffolding appears incorrect in many positions. The dense maps produced through a genotyping-by-sequencing approach after the genome sequence was published are helping to consolidate the assembly of ‘Hongyang,’ the diploid A. chinensis var. chinensis cultivar selected by the Chinese scientists for their sequencing project. Moreover, the new effort of sequencing the Red5 genotype made by the New Zealand scientists, supported by a multinational initiative that will take care of gene prediction and annotation, will provide a better kiwifruit genome assembly and annotation. Many other genotypes of both A. chinensis and its wild relatives are in the waiting list, and as soon as they are sequenced, they will contribute to an uncovering of the genetic diversity of the genus. Taxonomists will benefit from this, but it will benefit even more breeders, who can exploit sets of dense markers evenly distributed along the whole genome and apply the so-called genome selection, selection based on the molecular profiles of genotypes and no longer based on the extensive and time-consuming phenotypic evaluation of traits, the objects of selection
Liste del melo 2010: molte uscite e pochi ingressi
No full textLa scelta della varietà di melo o pero con cui costituire un nuovo frutteto
è la variabile principale per garantire la redditività dell’attività del frutticoltore. Le cultivar a disposizione sul mercato sono tante, e le Liste
che pubblichiamo in questo Speciale servono proprio a renderne più facile
la scelta. Tra le mele segnaliamo due nuovi ingressi: Forlady e Rosy Glow*
LA PRODUZIONE DI CIBO NELLE AZIENDE AGRARIE SPERIMENTALI DELLE UNIVERSITÀ ITALIANE
No full textItalian university farms provide a crucial support for teaching, research and innovation transfer in the agrofood, forestry, environmental and even social sectors. In order to point out their current values and weaknesses, and to start reflecting on possible development strategies, a survey was realised. The main weaknesses emerged concern the availability of the required data, in particular economic data, and the economic sustainability of these farms, especially with regard to staff costs. Moreover, the survey made it possible to outline for the first time a cognitive framework of the Italian university farms, thus creating a useful database for future updates and insights. The chapter offers also a description of a recent experience of “urban farming” in Udine, the so called “University Vegetable Garden” for for self-production of organic vegetables
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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